The BOOTENV_DEV_UFS macro is incomplete - it only initializes UFS
and scans SCSI devices but does not actually boot anything. This
causes the boot sequence to stop after scsi scan without loading
a kernel.

Update BOOTENV_DEV_UFS to set the devnum environment variable to
the UFS instance number, initialize the device using $devnum, and
delegate the boot process to the shared scsi_boot script. Remove
the explicit scsi scan, as it is already handled by scsi_boot.

This matches the pattern used by other boot device macros and
ensures that UFS devices can successfully boot using the distro
boot framework.

Signed-off-by: Padmarao Begari <padmarao.begari@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/5447ce1d5c4a21b0b62ce76ad642296110364041.1772801284.git.michal.simek@amd.com

Versal2 was using wrong GIC base mappings, causing GICR_TYPER reads to
not match EL1 MPIDR. This led U-Boot to walk beyond the per-CPU GICR
frames, access out-of-range addresses, and hit a synchronous exception
during early gic init percpu while booting up on alternate core
i.e., non cpu0.

Update Versal Gen 2 headers to the correct Versal Gen 2 bases.

Signed-off-by: Maheedhar Bollapalli <maheedharsai.bollapalli@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/d0bc3fe1af8409fcfe505e55fb7042a33b845a4e.1770721325.git.michal.simek@amd.com

By default Versal Gen 2 is using memory map where TF-A is placed to DDR and
there is also some space allocated for OP-TEE that's why move default
variable setting out of this location to avoid using it when distro boot is
used for booting.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/988a6f38ed9cfbb9757b76a16cb9cfec4601de85.1767685538.git.michal.simek@amd.com

Add usb_pgood_delay to ensure proper detection of USB devices.
Increase the USB power good delay for versal2 specific boards,
as certain USB sticks may not be detected without it.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Link: https://lore.kernel.org/r/20250818045304.4058177-1-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

When DISTRO_DEFAULT is disabled there is missing empty
BOOTENV_DEV_SHARED_XSPI macro defined.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/4c195468c0341ddd2aca98f83cdcbd40117cc9ee.1753885919.git.michal.simek@amd.com

Adding support for the usb distro boot command.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/121b6879efde0b83d3933852442895631c4cb24f.1744273853.git.michal.simek@amd.com

Adding support for the ufs distro boot command.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/c0e6737ae4119963afc8ea19b49b998a013d06c4.1744273853.git.michal.simek@amd.com

Add support for AMD Versal Gen 2. SoC is based on Cortex-a78ae 4 cluster/2
cpu core each. A lot of IPs are shared with previous families. There are
couple of new IP blocks where the most interesting from user point of view
is UFS.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/bc2b70831ce1031bd0fac32357bff84936e1310f.1716994063.git.michal.simek@amd.com